Which Oxide of Manganese is amphoteric?
Which Oxide of Manganese is amphoteric?
A. MnO2
B. Mn2O3
C. Mn2O7
D. MnO
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According to Journal of Biological Chemistry 158, human brain and heart are composed of ________water?
According to Journal of Biological Chemistry 158, human brain and heart are composed of ________water?A. 75%
B. 81%
C. 73%
D. 89%According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.
Which is fused cyclic aromatic compound _____________________?
Which is fused cyclic aromatic compound _____________________?A. diphenyl amine
B. diphenyl methane
C. naphthalene
D. biphenylNoble gases are so called zero group because they have:_________?
Noble gases are so called zero group because they have:_________?A. Zero Valency
B. Zero Electronegativity
C. Zero Electron Affinity
D. Both A and B
E. All of these
The equation that represents the relationship of Faraday’s first law of electrolysis is _______?
The equation that represents the relationship of Faraday’s first law of electrolysis is _______?A. Z=At
B. w=ZAt
C. w=Z/At
D. Z= At/MConversion of reactant into product in unit time is called________________?
Conversion of reactant into product in unit time is called________________?A. rate of forward reaction
B. rate of backward reaction
C. rate constant
D. rate co-efficientIn how many forms do matter exists ?
In how many forms do matter exists ?A. Three
B. Four
C. Five
D. Two